Home / 235,787.36-325,385.64-128,357

Finding the Fourth Proportional to 235,787.36, 325,385.64 and 128,357

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Solution

The fourth proportional to 235,787.36, 325,385.64 and 128,357 is: 177,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,787.36 : 325,385.64 = 128,357 : x
  2. Step 2: Convert to fraction form
    235,787.36/325,385.64 = 128,357/x
  3. Step 3: Cross multiply
    235,787.36x = 325,385.64 × 128,357
  4. Step 4: Simplify right side
    235,787.36x = 41,765,524,593.48
  5. Step 5: Solve for x
    x = 41,765,524,593.48/235,787.36
  6. Step 6: Final answer
    x = 177,132.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.